T H E E L E M E N T S |
Book II Proposition 10 | |
Again, since the angle EGF is half a right angle, and the angle at F is right, for it is equal to the opposite angle, the angle at C, [I.34] the remaining angle FEG is half a right angle; [I.32] therefore the angle EGF is equal to the angle FEG, so that the side EF is also equal to the side FG. [I.6] |
||
Previous Page Return to Propositions Next Page |